Question

"Stack is a linear data structure which follows a particular order in which the operations are performed."

What is the order in which the operations are performed in a Stack?

Name the List method/function available in Python which is used to remove the last element from a list implemented stack.

Also write an example using Python statements for removing the last element of the list.

Answer 1

An insertion or deletion can only take place at the top of a stack, which is a linear data structure that is implemented in the last in, first out (LIFO) fashion. LIFO indicates that the last piece added would be the first to be removed.

It is possible to remove data from the top, or the element at the top of the stack. To eliminate the final item from the list implemented stack, we may utilize the pop() function.

The final member in the list is removed using the following Python statement: 

def Pop (stk) : 
      if isEmpty(stk) : 
         return "Underflow" 
      else : 
         item = stk.pop() 
         if len (stk) == 0: 
            top = None 
         else : 
            top = len(stk) − 1 
         return item